Comprehensive Description
provided by North American Flora
Tyromyces obductus (Berk.) Murrill
Polyporus obductus Berk. I^ond. Jour. Bet. 4 : 304. 1845.
Pileus thin, sessile, fleshy, very fragile when dry, expanding from a wedge-shaped base, 6 X 12X0.3 cm. ; surface very smooth, yellowish-brown, glabrous, with a gelatinoushorny pellicle, having the appearance of parchment; margin thin, concolorous, reniformlobed : context very thin, white, fleshy-tough, becoming fragile and very hard when dry, 1 mm. or less thick; tubes slender, 1.5-2.5 mm. long, white to yellowish within, collapsing, mouths angular, white to yellowish, minute, 6 to a mm., edges very thin, flaccid, lacerate : spores smooth, hyaline.
Type locality : Boreal North America, below latitude 54°.
Habitat : Dead trunks.
Distribution : Known only from the type locality.
- bibliographic citation
- William Alphonso MurrilI, Gertrude Simmons BurIingham, Leigh H Pennington, John Hendly Barnhart. 1907-1916. (AGARICALES); POLYPORACEAE-AGARICACEAE. North American flora. vol 9. New York Botanical Garden, New York, NY
